import React from 'react'
import "./index.css"
export default function Footer({ todoList, setTodoList }) {
  //计算已完成的个数
  const getCheckedNum = () => {
    return todoList.reduce((p, c) => c.done ? p + 1 : p, 0);
  }
  return (
    <div className="todo-footer">
      <label>
        <input type="checkbox" />
      </label>
      <span>
        <span>已完成{getCheckedNum()}</span> / 全部 {todoList.length}
      </span>
      <button className="btn btn-danger">清除已完成任务</button>
    </div>
  )
}
